Abstract
In studies of the effects of physical conditioning and athletic training, analysis of body composition is frequently employed. Most commonly, relatively simple procedures are utilized such as anthropometrically determined breadths, widths, and circumferences; skinfolds; body typing; underwater weighing; or more recently, body impedance analysis. Unfortunately, these methods are quite descriptive and for the most part fail to provide information about the more basic components of body composition, for example, water, protein, bone mineral, and fat. There are methods for assessing these basic components but for the most part the equipment and methods for doing so remain laboratory and clinical procedures that are difficult to utilize on a large scale. A brief discussion of the recent history of body composition is presented, followed by consideration of techniques likely to supply the “criterion” information required to validate simpler methods with widespread utility.

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